1. A landing gear must be capable of supporting one third of an aircraft that weighs 250,000 kg. In aerospace industry, the factor of safety is taken as 2, which mean we would like the landing gear to be able to support twice its load. Determine the minimum cross-sectional area of the landing gear if it is made of heat treated steel having yield strength of 860 MPa and a tensile strength of 900 MPa. g = 9.8 (5 marks)